It has a restroom with a window in it as well, but the actual room does not have a window leading to the outside (I just learned it's called egress).

Also, I have a ton of family in Tucson, and I visit at least a few times a year.

Hello, I am completely new to real estate investing and was hoping to find out from people who have been in the game for a while what a realistic earning potential would be from accumulating long term rentals over time. 

does having a contract with a listing agent prevent you from buying properties ... directly from owners?

Quote from @Evan Polaski: @Enrique Roth, every investor should be preparing a full appraisal package.In mine, I include 1. before and after photos, 2. 5-6 comps that I want the appraiser to use, WITH explanations of what the comps have or don't have compared to mine.  

I have 7,200 sq ft lot.

My family immigrated from Africa, and I have recently celebrated my 40th birthday.

Hey @Cynthia Leite - I am a licensed general contractor in Chicago, and we have 32 categories in our scope of work, then, we have many subgroups under these.0. 

It is now 2.5 years later and we have had around 92% occupancy and average cashflow of $900.00.

How you use the money is really a product of your experience (do you have any properties other than the one with the HELOC?)